From Halopedia, the Halo wiki
Cedar (Cedrus) is a genus of coniferous trees in the plant family Pinaceae. They are most closely related to the firs (Abies), sharing a very similar cone structure. They occur at altitudes of 1,500–3200 meters on Earth. Some cypress trees are commonly referred to as cedar, and even some small deciduous trees. The terms red cedar and white cedar are often used to reduce confusion, but even those are abused terms that are applied to several related and unrelated species around the world.
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